<?php

/**
 * LoginForm class.
 * LoginForm is the data structure for keeping
 * user login form data. It is used by the 'login' action of 'SiteController'.
 */
class LoginForm extends CFormModel
{
	const ID_COOKIE = 'XSM_LOGIN_ID';

	public $username;
	public $password;
	public $rememberMe;
	public $verifyCode;
	private $_identity;

	/**
	 * Declares the validation rules.
	 * The rules state that username and password are required,
	 * and password needs to be authenticated.
	 */
	public function rules()
	{
		return array(
			// put this in first ...
			array('verifyCode', 'captcha'),
			// username and password are required
			array('username, password', 'required'),
			// rememberMe needs to be a boolean
			array('rememberMe', 'boolean'),
			// password needs to be authenticated
			array('password', 'authenticate', 'skipOnError' => true),
		);
	}

	public function behaviors()
	{
		return array(
			'smartCaptcha' => array(
				'class' => 'SmartCaptchaBehavior',
			),
		);
	}

	public function init()
	{
		parent::init();
		$cookie = Yii::app()->getRequest()->getCookies()->itemAt(self::ID_COOKIE);
		if ($cookie && !empty($cookie->name)) {
			$this->username = $cookie->value;
		}
	}

	/**
	 * Declares attribute labels.
	 */
	public function attributeLabels()
	{
		return array(
			'rememberMe' => '记住我',
			'password' => '密码',
			'username' => '用户名',
			'verifyCode' => '验证码'
		);
	}

	/**
	 * Authenticates the password.
	 * This is the 'authenticate' validator as declared in rules().
	 */
	public function authenticate($attribute, $params)
	{
		if (!$this->hasErrors()) {
			$this->_identity = new UserIdentity($this->username, $this->password);
			if (!$this->_identity->authenticate()) {
				$this->addError('password', '用户名或密码不正确');
			}
		}
	}

	/**
	 * Logs in the user using the given username and password in the model.
	 * @return boolean whether login is successful
	 */
	public function login()
	{
		if ($this->_identity === null) {
			$this->_identity = new UserIdentity($this->username, $this->password);
			$this->_identity->authenticate();
		}
		if ($this->_identity->errorCode === UserIdentity::ERROR_NONE) {
			$duration = $this->rememberMe ? 3600 * 24 * 30 : 0; // 30 days
			Yii::app()->user->login($this->_identity, $duration);
			return true;
		}
		return false;
	}
}
